Machine: K40 with Lightobject Z-Bed
Board: Cohesion3D Laserboard
Firmware: Cohesion3D Board Smoothie, as delivered
Problem/ Question - How X and Y work out of the box: When I open LightBurn and power on my K40, the X and Y home-to-switches sequence begins, moving the laser output head from wherever to the rear and left positions of X and Y. When it’s done, we know the 2 physical dimensional positions of X and Y. That’s X=0 and Y=210 in my case. From this we can derive our physical origin, X=0 and Y=0. These positions are used to reference laser travel anywhere within our cut/burn space in 2 dimensions of workspace. Yay!
How Z works out of the box: Z, on the other hand, doesn’t move. It just resets its position to 0, regardless of where it was when last powered down. It doesn’t matter where the Z device, the Z-bed, is. Z always resets to start at 0 when the K40 turns on and LightBurn is opened. We have no physical vertical reference to support a 3 dimensional work space. Boo hiss!
What I want - That Z moves to somewhere at startup. That the bed moves up or down, I don’t care. I can place a limit switch or 2 at the top and/or bottom of bed travel to limit travel to the point prior to destruction. The limit switch would provide a reference point. Now we have 3 dimensions defined for our 3 dimensional work space. But, as it is, the K40 does nothing with the Z axis.
Huge thanks to anyone who can tell me what I’m missing.